instancepoller

package

v0.0.0-...-6cf1bc9 Latest Latest Go to latest Published: Oct 13, 2016 License: AGPL-3.0 Imports: 16 Imported by: 0

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Repository

github.com/wallyworld/juju

Documentation ¶

Index ¶

Variables
func Manifold(config ManifoldConfig) dependency.Manifold
func NewWorker(config Config) (worker.Worker, error)
type Config
- func (config Config) Validate() error
type InstanceGetter
type ManifoldConfig

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	ShortPoll        = 1 * time.Second
	ShortPollBackoff = 2.0
	LongPoll         = 15 * time.Minute
)

ShortPoll and LongPoll hold the polling intervals for the instance updater. When a machine has no address or is not started, it will be polled at ShortPoll intervals until it does, exponentially backing off with an exponent of ShortPollBackoff until a maximum(ish) of LongPoll.

When a machine has an address and is started LongPoll will be used to check that the instance address or status has not changed.

Functions ¶

func Manifold ¶

func Manifold(config ManifoldConfig) dependency.Manifold

Manifold returns a Manifold that encapsulates the instancepoller worker.

func NewWorker ¶

func NewWorker(config Config) (worker.Worker, error)

NewWorker returns a worker that keeps track of the machines in the state and polls their instance addresses and status periodically to keep them up to date.

Types ¶

type Config ¶

type Config struct {
	Clock   clock.Clock
	Delay   time.Duration
	Facade  *instancepoller.API
	Environ InstanceGetter
}

func (Config) Validate ¶

func (config Config) Validate() error

type InstanceGetter ¶

type InstanceGetter interface {
	Instances(ids []instance.Id) ([]instance.Instance, error)
}

type ManifoldConfig ¶

type ManifoldConfig struct {
	APICallerName string
	ClockName     string
	Delay         time.Duration
	EnvironName   string
}

ManifoldConfig describes the resources used by the instancepoller worker.

Source Files ¶

View all Source files

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